Hi, On 6 December 2015 at 20:36, Jason Rosenberg <[email protected]> wrote:
> Hello, > > Is it necessary for all observer nodes to be specified in the configuration > of all other nodes in the cluster? > You can get away by using id=-1 for observers (in 3.4.x). > > Or is it ok for the core voting nodes to just know about each other, and > allow observer nodes to come and go without requiring updates to the voting > nodes' configuration? > > I am currently using 3.4.6 (perhaps the answer to this changes with 3.5.X, > since it allows dynamic ensembles?). > I think it does, you need to call reconfig() before adding new observers otherwise they'll join as learners (followers) (something that we might want to change). -rgs
